The adverse impacts of climate change have significantly increased the vulnerability of urban poverty, particularly among those residing in informal areas. This susceptibility is worsened by their restricted access to adequate housing, essential services, and social safety networks. Consequently, these communities face a disproportionate burden of climate-related challenges, encountering heightened risks and greater difficulty in recovering from environmental disasters. By using Lebanon as a case study, the article maps the geographic distribution of some informal settlements, highlighting their precarious locations prone to flooding, landslides, rising sea levels, proximity to highways, etc. Additionally, the article uncovers how poor-quality housing offers little protection against flooding or extreme temperatures, further exacerbating the adverse effects on people’s health and well-being.